diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
index e0c56febd7..07c1f0d2b3 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/serials/subscription-numberpatterns.tt
@@ -4,6 +4,11 @@
 [% INCLUDE 'calendar.inc' %]
 <script type="text/javascript">
 //<![CDATA[
+
+function confirmDelete() {
+  return confirm(_("Are you sure you want to delete this numbering pattern?"));
+}
+
 [% IF (new or modify) %]
   function testPattern() {
       var frequencyid = $("#frequency").val();
@@ -57,6 +62,11 @@
 function show_blocking_subs() {
     $("#blocking_subs").show();
 }
+$(document).ready(function(){
+    $(".delete_pattern").on("click",function(){
+        return confirmDelete();
+    });
+});
 //]]>
 </script>
 </head>
@@ -318,7 +328,7 @@ function show_blocking_subs() {
                   <td>[% numberpattern.displayorder %]</td>
                   <td>
                     <a href="/cgi-bin/koha/serials/subscription-numberpatterns.pl?op=modify&id=[% numberpattern.id %]">Edit</a> |
-                    <a href="/cgi-bin/koha/serials/subscription-numberpatterns.pl?op=del&id=[% numberpattern.id %]">Delete</a>
+                    <a class="delete_pattern" href="/cgi-bin/koha/serials/subscription-numberpatterns.pl?op=del&id=[% numberpattern.id %]">Delete</a>
                   </td>
                 </tr>
               [% END %]